AmerllicA's questions

Currently, I installed Lubuntu 20.04 on my Thinkpad Lenovo laptop. sometimes the networks became very slow, I command a ping 1.1.1.1 or ping 4.2.2.4 but it falls in a very deep delay. parallelly, I connect to my modem by my Android phone and the result of ping is so good, something around 100 till 170 ms, this is my last ping:

When I turn off and then turn on the WiFi, it became ok but after few seconds it falls into trouble again and I don't know why. sometimes like now, I don't have any problems. but sometimes it became very laggy and slow.

My Laptop specs:

id: jjg
description:    Notebook
product:    0578JJG
vendor: LENOVO
version:    ThinkPad Edge
serial: LRPKBVK
width:  64 bits
capabilities:   smbios-2.6 dmi-2.6 smp vsyscall32
configuration:  
boot    =   normal
chassis =   notebook
family  =   ThinkPad Edge
uuid    =   CCCC8701-4A31-11CB-9E75-EC6C392E6F18

Id bridge:

id: 
pci:1
description:    PCI bridge
product:    5 Series/3400 Series Chipset PCI Express Root Port 2
vendor: Intel Corporation
physical id:    
1c.1
bus info:   
pci@0000:00:1c.1
version:    06
width:  32 bits
clock:  33MHz
capabilities:   pci pciexpress msi pm normal_decode bus_master cap_list
configuration:  
driver  =   pcieport
resources:  
  irq   :   25
  ioport    :   5000(size=4096)
  memory    :   f0500000-f05fffff
  ioport    :   c0400000(size=2097152)

Network:

id: 
network
description:    Wireless interface
product:    Centrino Wireless-N 1000 [Condor Peak]
vendor: Intel Corporation
physical id:    
0
bus info:   
pci@0000:03:00.0
logical name:   
wlp3s0
version:    00
serial: 00:26:c7:69:44:46
width:  64 bits
clock:  33MHz
capabilities:   pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration:  
  broadcast =   yes
  driver    =   iwlwifi
  driverversion =   5.4.0-31-generic
  firmware  =   39.31.5.1 build 35138
  ip    =   192.168.1.101
  latency   =   0
  link  =   yes
  multicast =   yes
  wireless  =   IEEE 802.11
resources:  
  irq   :   33
  memory    :   f0500000-f0501fff

Any Idea how to fix this?

I know it is so weird, but last night I set an image on my desktop background and delete the image, then I right-click on the desktop and press the desktop properties to change the style of background (center, stretch and etc) then the desktop properties stopped something like hanging on Windows.

Then a black window alerted something and I press yes without reading it. after that with right-click on the desktop I just see this:

Even some system applications don't work now. for example, I cannot take a screenshot.

Also, my pcmanfm-qt is dead completely, with the command line or clicking on the icon nothing happens.

I don't know what happens. and I have no idea how to fix it.

I'm using Lubuntu LXQt desktop version 20.04, and everything was ok until installing NordVPN. during the using NordVPN, I have no issue with the connection. but when the laptop is idle for some time and when I back to browser it seems there is no connection. so I test it with:

ping 4.2.2.4

And I get this error:

ping sendmsg operation not permitted

Even I use sudo or do login/logout, just restarting entire the system could help me to back to the working network. obviously there is another issue. so:

What is the problem and how I can fix it?

NordVPN outputs:

$ nordvpn status
    Status: Disconnected
$ nordvpn settings
    Technology: OpenVPN
    Protocol: UDP
    Kill Switch: disabled
    CyberSec: disabled
    Obfuscate: disabled
    Notify: enabled
    Auto-connect: disabled
    DNS: disabled

After installing Google Chrome on Lubuntu 20.04 I launched the Google Chrome web browser and it shows me the default browser alert, and definitely I press it and I expect it works like other versions of Ubuntu or Lubuntu, but for this latest version it doesn't work, each time the alert is showed and on the calling web browser lovely Firefox is opened, so How I can make the Google Chrome as default web browser?